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    <title>413 - File Too Large | Ruiyun Cloud</title>
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        body {
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            min-height: 100vh;
            margin: 0;
            background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
            color: #333;
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        .error-container {
            text-align: center;
            background: white;
            padding: 3rem;
            border-radius: 10px;
            box-shadow: 0 10px 40px rgba(0,0,0,0.2);
            max-width: 500px;
        }
        h1 {
            font-size: 6rem;
            margin: 0;
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        h2 {
            font-size: 1.5rem;
            margin: 1rem 0;
            color: #555;
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        p {
            color: #777;
            margin: 1rem 0 2rem;
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        a {
            display: inline-block;
            padding: 0.75rem 2rem;
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            transition: background 0.3s;
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        a:hover {
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    </style>
</head>
<body>
    <div class="error-container">
        <h1>413</h1>
        <h2>File Too Large</h2>
        <p>The file you're trying to upload exceeds the maximum size limit of 10MB.</p>
        <a href="javascript:history.back()">Go Back</a>
    </div>
</body>
</html>
